Hey not sure where to post this but snice i have a crate motor i figuered id post here. I have a 350 with some minor work done Headers .480 lift comp cam some other stuff currently i have a Performer RPM Intake. Im going to be getting a set of Phase 2 bowtie heads that are worked im wondering if its worth it to get a RPM Air Gap manifold there not a big amout of money but i dont want to spend 200 bucks if it really isnt gonna do much for me. Any input would be great.

 

Not a whole lot of difference. Neither is the right thing.

That's way not enough cam for those heads. That's a very mild street cam for stock heads with stock diameter valve springs; those are racing heads.

You need to be looking at solid rollers with at least .620" lift and 250° of duration. Use a single plane intake such as a Brodix or Dart.

 

This car is my daily driver i do take it to the track fairly often thought. I dont want to do anything to extreme. Gas Milegae is a concern i already get about 12 mpg 15 is i absolutly baby it.

 

Then those are probably not the heads for you. A little over the top.